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Figure Captions

Figure 1. An illustration of the ranges of sizes and shapes of the SASS cells used in generating the images in this paper. Only cells with incidence angles in the range of are shown. While SASS also made nadir measurements, these are not used in this paper.

Figure 2. A plot showing (in dB) versus incidence angle for vertically-polarized measurements from a study region in north-west Brazil. The linear regression line (, ) is shown. The study region is centered at W N. Only measurements with %and are plotted.

Figure 3. Plots of vertically-polarized and determined from the measurements in shown in Fig. 2. In the upper portion of this plot, the and coefficients of the linear model were computed using linear regression of versus were computed for a 10 day window centered at the plotted point. The window was shifted 1 day and and recomputed using only the measurements in the window. The lower plot was generated using the estimate from the upper plot to incidence angle ``correct'' the individual measurements. The corrected measurements ( values) are plotted as square symbols. The heavy line in the lower plot is a plot of the average ``corrected'' value computed using a sliding 10 day window.

Figure 4. An enhanced resolution (a) image and a low resolution ``binned'' (b) image of for a region in overlapping Brazil and Paraguay showing the location of a line transect used to compare the resolution of the two methods. The resolution of the low resolution image is while the pixel resolution of the enhanced resolution image is . The rectangular region extends from W to W and from S to S.

Figure 5. values versus distance along the line extending from W S to S S. The solid line is the value of from the enhanced resolution image shown in 4(a) while the dashed line is the value of from the low resolution ``binned'' image in 4(b). For an explanation of the symbols, see the text.

Figure 6. Enhanced resolution estimate image of the extended Amazon basin derived from three months of SASS data. This image was generated using only vertically-polarized measurements. The resolution element size is (approximately km). For comparison, (approximately km) corresponds to the best resolution obtainable using the ``binning'' approach.

Figure 7. Enhanced resolution estimate image corresponding to Fig. 6.

Figure 8. Outline of the vegetation study region. The colocated vegetation indices and image values extracted from this region were used in the vegetation discrimination experiments.